Recent posts

Interpolation Methods

This article provides an overview of interpolation methods including flat, linear, and cubic, along with examples. I’ll provide a simple example to use them. These interpolation methods aim to compute a value inside vertices and, further, advanced interpolation methods aim to make smooth value...

A Derivation of Depth Filter

The depth filter is a useful component in monocular camera visual odometry systems, such as SVO (Semi-Direct Visual Odometry) 1 2. It is designed to estimate depth values from a sequence of images captured by a single camera. The filter operates under the assumption of Gaussian measurement noi...

How to Compute Faster 2-D Convolution in Python

In image processing, 2-D convolution is a highly useful operation. It can be used for tasks such as blurring, morphology, edge detection, and sharpening. In Python, a naive 2-D convolution method takes a huge computational load for a large image. This post introduces the use of np.lib.stride_t...